126705826385 has 24 divisors (see below), whose sum is σ = 161553766776. Its totient is φ = 95380346880.

The previous prime is 126705826381. The next prime is 126705826399. The reversal of 126705826385 is 583628507621.

It can be written as a sum of positive squares in 12 ways, for example, as 25446949441 + 101258876944 = 159521^2 + 318212^2 .

It is not a de Polignac number, because 126705826385 - 2² = 126705826381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126705826381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9462395 + ... + 9475775.

It is an arithmetic number, because the mean of its divisors is an integer number (6731406949).

Almost surely, 2^126705826385 is an apocalyptic number.

It is an amenable number.

126705826385 is a deficient number, since it is larger than the sum of its proper divisors (34847940391).

126705826385 is a wasteful number, since it uses less digits than its factorization.

126705826385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19973 (or 19956 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 126705826385 in words is "one hundred twenty-six billion, seven hundred five million, eight hundred twenty-six thousand, three hundred eighty-five".